Little Miss NatP version - SB15CAC-8 + Seas DXT underway
Well, this is inspired by Letiennam's two way in an existing cabinet, using the SB15CAC-4- I have a passle of the SB15CAD-8, and some Seas DXT tweeters, and some measurements and crossover ideas for the latter, and a whole mess of the SB15SFCR passive radiators (about 8) so I figured all I would need to for an "official" design study is an enclosure plan, and since I'm pressed for time these days, and it's juste a DESIGN Study, why I turned to those fine folks at PE because they finally have a 15L test enclosure in stock in my preferred form factor - about 8-1/2" wide, as was used for early tests of the PT5010. So I ordered 4 of the this morning, figuring I can create an unholy marriage of two of them into one cabinet, with my own custom front panel, and save quite a bit of time.
And I even have an LR3 high pass network design that is fairly close to being in the ball park we need for an MTM, so it's "building on existing technology".
Note, I did not say LOW COMPONENT COUNT technology! But, rather, performance and precision oriented. Complete with HF breakup mode suppression, of course.
A reminder: raw QNF response of the DXT:
This is what I call a DXT normalization network, to show what is possible with this tweeter to take advantage of it's strong points - dispersion and distortion:
Distortion measurements suggest a crossover in the range of 2500Hz.
So, though there can be many a slip twixt the cup and the lip, I think pursuing this further is a reasonable endeavor. Not quite budget oriented, but a lot more so than many recent project efforts (on my part).
And a reminder of what we're looking at to work with using the SB15CAC30-8...
In an MTM, the net half plane sensitivity will be pushed up 6 dB, to about 91-92 dB. Final system sensitivity with baffle step should be reasonable, with a slight downward tilt planned, given the expected wide polar response.
And I even have an LR3 high pass network design that is fairly close to being in the ball park we need for an MTM, so it's "building on existing technology".
Note, I did not say LOW COMPONENT COUNT technology! But, rather, performance and precision oriented. Complete with HF breakup mode suppression, of course.
A reminder: raw QNF response of the DXT:
This is what I call a DXT normalization network, to show what is possible with this tweeter to take advantage of it's strong points - dispersion and distortion:
Distortion measurements suggest a crossover in the range of 2500Hz.
So, though there can be many a slip twixt the cup and the lip, I think pursuing this further is a reasonable endeavor. Not quite budget oriented, but a lot more so than many recent project efforts (on my part).
And a reminder of what we're looking at to work with using the SB15CAC30-8...
In an MTM, the net half plane sensitivity will be pushed up 6 dB, to about 91-92 dB. Final system sensitivity with baffle step should be reasonable, with a slight downward tilt planned, given the expected wide polar response.
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